EP 2368098 B1 20180926 - DYSON-TYPE IMAGING SPECTROMETER HAVING IMPROVED IMAGE QUALITY AND LOW DISTORTION
Title (en)
DYSON-TYPE IMAGING SPECTROMETER HAVING IMPROVED IMAGE QUALITY AND LOW DISTORTION
Title (de)
BILDGEBUNGSSPEKTROMETER DES DYSON-TYPS MIT VERBESSERTER BILDQUALITÄT UND GERINGEN VERZERRUNGEN
Title (fr)
SPECTROMETRE IMAGEUR DE TYPE DYSON DE QUALITE IMAGE AMELIOREE ET A FAIBLE DISTORSION
Publication
Application
Priority
- FR 2009052114 W 20091102
- FR 0857466 A 20081103
Abstract (en)
[origin: WO2010061090A1] The invention relates to a Dyson-type imaging spectrometer that includes an input port (1) extending in a direction X, an output port, a diffraction array (4) including a set of streaks on a concave substrate, an optical system including a lens (2), said lens having a first planar surface (8) and a second convex surface (3), the convex surface of the lens and the concave surface of the diffraction array being concentric, wherein said optical system is capable of receiving a light beam from an input port and of directing the same towards the diffraction array, and of receiving a beam diffracted by the diffraction array and of forming a spectral image of said diffracted beam in a plane (7) of the output port, wherein said spectral image can be spatially resolved in an extension direction X' of the image of the input port. According to the invention, the diffraction array (4) includes a set of nonparallel and non-equidistant streaks and/or the substrate of the diffraction array is nonspherical so as to form an image of the input port in the output plane having an improved image quality and very small distortions.
IPC 8 full level
CPC (source: EP US)
G01J 3/1838 (2013.01 - EP US); G01J 3/2823 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
FR 2938059 A1 20100507; FR 2938059 B1 20110311; CA 2742493 A1 20100603; CA 2742493 C 20180116; DK 2368098 T3 20190121; EP 2368098 A1 20110928; EP 2368098 B1 20180926; JP 2012507698 A 20120329; JP 5639066 B2 20141210; US 2011222061 A1 20110915; US 8520204 B2 20130827; WO 2010061090 A1 20100603
DOCDB simple family (application)
FR 0857466 A 20081103; CA 2742493 A 20091102; DK 09768128 T 20091102; EP 09768128 A 20091102; FR 2009052114 W 20091102; JP 2011533800 A 20091102; US 200913127354 A 20091102